Points Database

Location Guides:

: Xiyan : Eyes of the Knee

Ex-LE-5 : Extra Lower Extremity 5


Location:
On the knee, in the hollows formed when the knee is flexed, immediately below the patella and both medial and lateral to the patellar ligament.

Needling:
With the knee flexed and supported by a rolled pillow: Perpendicular insertion, directed towards Weizhong Bl-40, 1 - 2 cun, or oblique insertion ins a medial and superior direction behind the patella 1 - 2 cun, or through needling, between lateral and medial Xiyan (M-LE-16) behind the the patellar ligament.

TCM Actions:
Dispels wind damp, reduces swelling and alleviates pain

TCM Indications:
  • Swelling and pain of the knee joint, difficulty in the flexing and extending the knee, weakness of the knee joint, numbness of the knee, numbness of the lower limb, atrophy disorder of the lower limb, leg qi.

    Neuroanatomy:
    Superficial Innervation: Saphenous nerve (L3 - L4), medial, and lateral cutaneous nerve of the calf (L5 - S2), lateral
    Dermatome Segment: L4 (medial), L5 (lateral)

    Notes:
    Essential points in the treatment of all knee disorders, whether due to deficiency or excess.

    Medieval phlebotomy point (Hans von Gersdorff, 1517: Feldtbüch der Wundartzney, www.nlm.nih.gov)

    In ayurvedic medicine:
    Janu marma point (medial only)
    Size: 1 angula (cun)
    Structure: Tendon
    Effect of Injury: Disability (vaikalyakar marma)
    (Harish Johari, 1996, Ayurvedic Massage, Sanatan Society; Anupama Bhattacharya, Marma Shastra)

    Lad and Durve (2008) in Marma Points of Ayurveda locate a point called the anterior Janu in the centre of the kneecap, between these points and Heding. They associate it with Vyana Vayu, Prana Vayu, Apana Vayu, Udana Vayu, Shleshaka Kapha, Kledaka Kapha and Avalambaka Kapha.

    They give the following functions:
    - Benefits the knees
    - Promotes circulation
    - Relieves pain locally

    Another posterior Janu is located at Weizhong Bl-40.

    In Tibetan medicine:
    Moxa point (AMNH, Tibetan Medical Paintings)

    In Thai massage:
    Acupressure points (Salguero & Roylance, 2011, Encyclopedia of Thai Massage)



    Reference Notes: (click to display)